Scientific Linux Security Update : kernel on SL7.x x86_64

Description

A flaw was found in the way the Linux kernel's SCTP implementation validated INIT chunks when performing Address Configuration Change (ASCONF). A remote attacker could use this flaw to crash the system by sending a specially crafted SCTP packet to trigger a NULL pointer dereference on the system. (CVE-2014-7841, Important)

A race condition flaw was found in the way the Linux kernel's mmap(2), madvise(2), and fallocate(2) system calls interacted with each other while operating on virtual memory file system files. A local user could use this flaw to cause a denial of service. (CVE-2014-4171, Moderate)

A NULL pointer dereference flaw was found in the way the Linux kernel's Common Internet File System (CIFS) implementation handled mounting of file system shares. A remote attacker could use this flaw to crash a client system that would mount a file system share from a malicious server. (CVE-2014-7145, Moderate)

A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system. (CVE-2014-7822, Moderate)

It was found that the parse_rock_ridge_inode_internal() function of the Linux kernel's ISOFS implementation did not correctly check relocated directories when processing Rock Ridge child link (CL) tags. An attacker with physical access to the system could use a specially crafted ISO image to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-5471, CVE-2014-5472, Low)

This update also fixes the following bugs :

Previously, a kernel panic could occur if a process reading from a locked NFS file was killed and the lock was not released properly before the read operations finished. Consequently, the system crashed. The code handling file locks has been fixed, and instead of halting, the system now emits a warning about the unreleased lock.

A race condition in the command abort handling logic of the ipr device driver could cause the kernel to panic when the driver received a response to an abort command prior to receiving other responses to the aborted command due to the support for multiple interrupts. With this update, the abort handler waits for the aborted command's responses first before completing an abort operation.

Previously, a race condition could occur when changing a Page Table Entry (PTE) or a Page Middle Directory (PMD) to 'pte_numa' or 'pmd_numa', respectively, causing the kernel to crash. This update removes the BUG_ON() macro from the __handle_mm_fault() function, preventing the kernel panic in the aforementioned scenario.

The system must be rebooted for this update to take effect.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
if (NASL_LEVEL &lt; 3000) exit(0);
include("compat.inc");
if (description)
{
script_id(81073);
script_version("$Revision: 1.1 $");
script_cvs_date("$Date: 2015/01/29 15:48:27 $");
script_cve_id("CVE-2014-4171", "CVE-2014-5471", "CVE-2014-5472", "CVE-2014-7145", "CVE-2014-7822", "CVE-2014-7841");
script_name(english:"Scientific Linux Security Update : kernel on SL7.x x86_64");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Scientific Linux host is missing one or more security
updates."
);
script_set_attribute(
attribute:"description",
value:
" - A flaw was found in the way the Linux kernel's SCTP
implementation validated INIT chunks when performing
Address Configuration Change (ASCONF). A remote attacker
could use this flaw to crash the system by sending a
specially crafted SCTP packet to trigger a NULL pointer
dereference on the system. (CVE-2014-7841, Important)
- A race condition flaw was found in the way the Linux
kernel's mmap(2), madvise(2), and fallocate(2) system
calls interacted with each other while operating on
virtual memory file system files. A local user could use
this flaw to cause a denial of service. (CVE-2014-4171,
Moderate)
- A NULL pointer dereference flaw was found in the way the
Linux kernel's Common Internet File System (CIFS)
implementation handled mounting of file system shares. A
remote attacker could use this flaw to crash a client
system that would mount a file system share from a
malicious server. (CVE-2014-7145, Moderate)
- A flaw was found in the way the Linux kernel's splice()
system call validated its parameters. On certain file
systems, a local, unprivileged user could use this flaw
to write past the maximum file size, and thus crash the
system. (CVE-2014-7822, Moderate)
- It was found that the parse_rock_ridge_inode_internal()
function of the Linux kernel's ISOFS implementation did
not correctly check relocated directories when
processing Rock Ridge child link (CL) tags. An attacker
with physical access to the system could use a specially
crafted ISO image to crash the system or, potentially,
escalate their privileges on the system. (CVE-2014-5471,
CVE-2014-5472, Low)
This update also fixes the following bugs :
- Previously, a kernel panic could occur if a process
reading from a locked NFS file was killed and the lock
was not released properly before the read operations
finished. Consequently, the system crashed. The code
handling file locks has been fixed, and instead of
halting, the system now emits a warning about the
unreleased lock.
- A race condition in the command abort handling logic of
the ipr device driver could cause the kernel to panic
when the driver received a response to an abort command
prior to receiving other responses to the aborted
command due to the support for multiple interrupts. With
this update, the abort handler waits for the aborted
command's responses first before completing an abort
operation.
- Previously, a race condition could occur when changing a
Page Table Entry (PTE) or a Page Middle Directory (PMD)
to 'pte_numa' or 'pmd_numa', respectively, causing the
kernel to crash. This update removes the BUG_ON() macro
from the __handle_mm_fault() function, preventing the
kernel panic in the aforementioned scenario.
The system must be rebooted for this update to take effect."
);
# http://listserv.fnal.gov/scripts/wa.exe?A2=ind1501&L=scientific-linux-errata&T=0&P=3219
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?7ec4b7cc"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"patch_publication_date", value:"2015/01/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/01/29");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015 Tenable Network Security, Inc.");
script_family(english:"Scientific Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " &gt;!&lt; release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu &gt;!&lt; "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", reference:"kernel-abi-whitelists-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debug-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debug-debuginfo-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debug-devel-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debuginfo-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-debuginfo-common-x86_64-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-devel-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", reference:"kernel-doc-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-headers-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-debuginfo-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-libs-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"kernel-tools-libs-devel-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"perf-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"perf-debuginfo-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"python-perf-3.10.0-123.20.1.el7")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"python-perf-debuginfo-3.10.0-123.20.1.el7")) flag++;
if (flag)
{
if (report_verbosity &gt; 0) security_hole(port:0, extra:rpm_report_get());
else security_hole(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

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Protected by

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A remote attacker could use this flaw to crash a client system that would mount a file system share from a malicious server. (CVE-2014-7145, Moderate)\n\n - A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system. (CVE-2014-7822, Moderate)\n\n - It was found that the parse_rock_ridge_inode_internal() function of the Linux kernel's ISOFS implementation did not correctly check relocated directories when processing Rock Ridge child link (CL) tags. An attacker with physical access to the system could use a specially crafted ISO image to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-5471, CVE-2014-5472, Low)\n\nThis update also fixes the following bugs :\n\n - Previously, a kernel panic could occur if a process reading from a locked NFS file was killed and the lock was not released properly before the read operations finished. Consequently, the system crashed. The code handling file locks has been fixed, and instead of halting, the system now emits a warning about the unreleased lock.\n\n - A race condition in the command abort handling logic of the ipr device driver could cause the kernel to panic when the driver received a response to an abort command prior to receiving other responses to the aborted command due to the support for multiple interrupts. With this update, the abort handler waits for the aborted command's responses first before completing an abort operation.\n\n - Previously, a race condition could occur when changing a Page Table Entry (PTE) or a Page Middle Directory (PMD) to 'pte_numa' or 'pmd_numa', respectively, causing the kernel to crash. 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A remote attacker could use this flaw to crash the system by sending a specially crafted SCTP packet to trigger a NULL pointer dereference on the system. (CVE-2014-7841, Important)\n\n - A race condition flaw was found in the way the Linux kernel's mmap(2), madvise(2), and fallocate(2) system calls interacted with each other while operating on virtual memory file system files. A local user could use this flaw to cause a denial of service. (CVE-2014-4171, Moderate)\n\n - A NULL pointer dereference flaw was found in the way the Linux kernel's Common Internet File System (CIFS) implementation handled mounting of file system shares. A remote attacker could use this flaw to crash a client system that would mount a file system share from a malicious server. (CVE-2014-7145, Moderate)\n\n - A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system. (CVE-2014-7822, Moderate)\n\n - It was found that the parse_rock_ridge_inode_internal() function of the Linux kernel's ISOFS implementation did not correctly check relocated directories when processing Rock Ridge child link (CL) tags. An attacker with physical access to the system could use a specially crafted ISO image to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-5471, CVE-2014-5472, Low)\n\nThis update also fixes the following bugs :\n\n - Previously, a kernel panic could occur if a process reading from a locked NFS file was killed and the lock was not released properly before the read operations finished. Consequently, the system crashed. The code handling file locks has been fixed, and instead of halting, the system now emits a warning about the unreleased lock.\n\n - A race condition in the command abort handling logic of the ipr device driver could cause the kernel to panic when the driver received a response to an abort command prior to receiving other responses to the aborted command due to the support for multiple interrupts. With this update, the abort handler waits for the aborted command's responses first before completing an abort operation.\n\n - Previously, a race condition could occur when changing a Page Table Entry (PTE) or a Page Middle Directory (PMD) to 'pte_numa' or 'pmd_numa', respectively, causing the kernel to crash. 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A remote attacker\n could use this flaw to crash the system by sending a\n specially crafted SCTP packet to trigger a NULL pointer\n dereference on the system. (CVE-2014-7841, Important)\n\n - A race condition flaw was found in the way the Linux\n kernel's mmap(2), madvise(2), and fallocate(2) system\n calls interacted with each other while operating on\n virtual memory file system files. A local user could use\n this flaw to cause a denial of service. (CVE-2014-4171,\n Moderate)\n\n - A NULL pointer dereference flaw was found in the way the\n Linux kernel's Common Internet File System (CIFS)\n implementation handled mounting of file system shares. A\n remote attacker could use this flaw to crash a client\n system that would mount a file system share from a\n malicious server. (CVE-2014-7145, Moderate)\n\n - A flaw was found in the way the Linux kernel's splice()\n system call validated its parameters. 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